Counterthrust-pressure air-cooled motor



Feb. 25, 1930. c. G. EDWARDS v 1,748,642

COUNTER THRUST PRESSURE AIR COOLED MOTOR Filed Aug. 14, 1929 I PeientedFeb. 2s, lesofj l cLAnnNcEc. EDWARDS, F

PATENTgoFEiCE Los"ANGELEscALrFoRNra y couN'rEnmHnUsmj-Pnnssunn AmecooLEnarmaronk I i irApprlicaton fled August 14,

My invention is a counter-thrust 'pressureV air cooled motonft f e y, Ye

' vMy invention pertains to counter-thrust pressure motor, in' which the"gas 4from the .5 explosion of' an internal combustion engine 'gives asidethrust on thev piston, counteracting the'side vthrust, on the sideofthercylin-k der due to Vthe angular position of the connecting rodandthe crank. Types of this engine arefdisclosed inmyl patent applications for U. S. Letters' Patent, filed April 11, 1928,"Serial No,269,087 foroounter thrust pressure motor :and application 1 Serial No.

' 378,514led July 15, 1929, for counter thrust ,f lpressure motor, alsoPatent No.' 1,678,424,

issued,L July 24, 1928,?v U.S.2Patent No.

1,701,322,l issued Februaryv 5, 1929, for

counter thrust pressuremotors. e'

f An object of my present invention {isthe 2Q; adaption of ayconstruction suitableyfora-the.

counter-thrust principle in air cooled'motors,

which A mayf be utilizedl for e engines of `very f light'constructionadapted `for aeroplane and similar work. f e

An object, of my present `construction is making a cylinder ofia metalblock turned lon Y the outside formingns and having a longiV tudinalchannel out internally *in fthe. cylinderblock or formed by molding andin'fwhich ,32 the wallof the vcylinder (':oni'orni's tothe shape of thechannel.k With this channel I utilize va pressure resisting' and Wearing'dller channel which -i's secured vinternally of thecylinder and whensecured by screws lvor the -likeytheA interior of the'cylinder is"turnedto properk diameter." An obj ecty thereforeof.- this 'conistruction is to vmake a cylinder;,ofsubstan-` iti'allyuniform strength,l considered iii 'atrans-jv 40k verse direction with the channel on oneside cured in the cylinderahislle 1e1111e;1;,edd'-v ,ing the hanger intwo longitudinally joinedv A yfitting on the piston;

pression rings' in the fller block-ofthe 1929. Yserieu no, 385,935'. l.

ing strength to the cylinder as well as forIn-. f i ingl a Wear-resisting structure.

A further object of y invention is coni-,l structing thepiston with ahanger on one side sanginthe eheu1m-,1-r Thiehengef hee emr '50'v ingblock at the lowerfend making a closure inthe channel and withthishanger I feature expansionv packing stripsnr partialv rings whichareforced outwardly, preferably byA a wedge-sha} ed` spring, thus giving agastight 55l Y seal against the llerj'ehannel by ,the rings' e on thefilling block. y Y

Another detail featurevof mylinvention is having a .longitudinal grooveon opposite sides of the hanger on a projecting rim and? with dastraight compressing sealing strip mounted therein; ythis beingpressedwoutwardly by a wedge typeoj:l spring. e, y

Y Another feature of my invention lsfforrn parts, thusfallowing takingup of jwear. ,i

V`My invention illustrated in the accom.

'panying drawings, in which, F'gure 1k .is a vertical'. section throughan engine, showing yinvention with the piston shown in partialelevation; .y Fig. f2' -isatransverse section on the line 2-2 fof Fig. 1in thedirection of the'ar.- rows; .F'g. 3 isifa transverse section onthe line 3-.3of Fig. k1 in the direction of the arrows; Fig. 4e isanperspective View internally of the filler channel, fitting in thechannel of the' cy1,nder;i c n e if Fig'. 5 isla perspectiveviewof thehanger .'F'g. G i'san'fenlarged sectionv the l line,6,-'-61ofFig.5,through one of the com?y hanger. A 8,5

Ja :cylinder designated Y generally by* the nu- Ineralll which hasmainwalls 12 which are cylindricaland which has anroutwardly. eX-Y thereis a channel 14 formed at the bnlge. This may be formed in the castingof the cylinder block or Ina-y be machined out of the `lateraldepressions or recessesl 'o'nthe mari The cylinder isillus=A gins ofth'echannel. trated as bolted on a. crank case 17 andhavY cured by bolts 19passing through bosses 2O on the upper portionofthecylinderj Y .A llerchannel 21 (note particularly 4) is formed of comparatively thinn'et'alwith a longitudinal channel. structure 22 and with marginal' flanges23'. These flanges 'are "illustrated as having screwholes'24. The'anges' fit in therecess'es or groovesl 16 andthechannel .portion 22' tsin the "channel V'.14 :ofthe cylinder. Screws o r'iother fasteningsarethen used to attach the filler channel in theV channel of thecylinder 'and thev interior'of `th'ecy'linderis thenmachined:turningdown the'couniV ter-sunk vscrews andA alsoA the flangesQ?fof tlie filler channel. This makes a 'cylinderfc'o'm strnctionwhichinstead "of being weakened at the channel is actually '.strongerthantheJ remaining lportions yof the cylinder,"l having.

the 'filler channelin addition" to'the metal formingj thelthick'ness ofthe'cylin'der attlie" main channel and a special insert is-'provided' totale'the Wear due tojtheloperation and of thehanger and the kfillingblock' operating. in the channel; l

and 6)' is' y'formed Vwithva verticalweb l section tical web section ismadeorra'slightcurvature as indicated in Figs; 2,V 3 and4,to conformtothe cylindrical'shal'ieV `of the?'pistoiijrand` the flanges {28'and2'9Ht in recesses 30 'inthe bottoni and topof the piston. Atthe margins ofthe web there are outwardly ,extending 'ribs 31, 'ea'c'liV of wh i'cl"1r ibs has `a longitudinal groove 32l on? the outside' textending betweentheflangesQBfand 29j The fillribloclilias an outwardly'curved wall 33ffit'tin'gs'ubstanf ,a tially the interior of the channel@ QQfafnd/hav#extend into the piston.

Springstn'ieffriffgs 37 ne lamerandia abutting against the verticalcompression strips 89, fitting in the grooves 327 these strips alsobeing pressed outwardly by leaf-like wedge shaped springs 40.The'construction illustrates two of the curved strips or rings 37 in thefilling blockV and the straight compression strip 39 in each side of thehanger. The piston is illustrated vas being provided with compression-rings 41 and 42 which it in grooves in the piston and pass behind thehanger.

Withnycoiistruction, on reciprocation of thepistondue tothe explodinggases these `gases aredriven with considerable force into ing aremovable Yheadr'185v the-headtbeing se-n .pressionpackingfbytheCompression strips on the filler block and on the ribs of the hammer,

prevents' lealageloffthegases past the piston.

giving a tight seal with the internal walls of the fillercliannel'lManifestlyas this channel is removable, it may bereplaced'whenlwornto'asulicient extenttofgive an inefficient plesfof-myinventionfwithout Vdepartingf.from' the spirit thereof asset forth' 'in'the Ydescrip-w tion'drawings and claims. Y

I1- claimi l: Anengine having alcylinder 'with aV channelat one ls id'e,alfille'r strip uiittingin said channel,v 'and a piston 'having'.afilling :bloclz on oneside to operatein the channel.`

and secured on the ins'ideoffthe-cylind'er andv the piston havinga'llin'gfblock securedV there--` s Y to', said block operatingin thechannellshaped Thehanger (noteiparticularlyv Figs. y5VV f iil'ler piece:1

3;A'nengine having av cylinderwith'a channel' on*one"s1dfe, a".we'arresistingsfill'er piece mounted in 'said channel',`.and'y afrpistonhaving a hanger thereon with afilling: block4` fitting infthe channel. Y

Y 4. Anrengine havinga cylinder witha channel atf one side, av 'wearresisting-y chan'-Y nel-shaped filler piece fitted internally? ofthesaidi'channel--and ,having flanges; there being recesses f in^thecylinder to accommodate the said flanges,and apiston'fhavinga fillerblock operatingxinfthe said filler'piec'e.y 1

wAn engine having a cylinder., the cyl-A inder :wall beingintegral andhaving a -chan-.

nel-shaped 'wear resistingyllerfpiece fitting in a'channeloffthecylinderand a filler block securedto the piston operating vin the channel-shapedfiller piece. fk

6.' An engine havingfa cylinder'withan inte'g'ral.y wall an'dg witha Ylongitudinal channel "at o'nev side,` a wear resisting: channelfshapedller piece yfitting in the channel of .the cyli'ndergfa piston havingalhang'er'with a filling b lockthereon;v the said' block Lopera'tingtwithy Various changes may `be made in th'eprincig 7. engine having i acylinder withfa Y channel at one side and lmarginaldepressionsonopposite sides of the channel, a channel- `v )shaped lillerpiece'itted in the said channel and having lianges tting inthe saiddepressions, means to secure the ller piece to the i cylinder and avhanger secured to the piston having a filling `block operated in thechan'- nel-shaped filler piece. 5 f

8. -An engine having a cylinder withV a lonn gitudinal channel, avchannel-shaped filler piece fitted internally-of the said channel and ylsecured to the cylinder, ahanger having a longitudinalsplitandsecuredto a piston, said khanger having'afilling blockyoperating in the channel-shaped filler piece.

hanger Vhaving a rib in each side with a groove5 Y i a in the'ribextending into the margins of the Vlling block, a metallic packing stripin each groove pressed outwardly by a wedge-like spring inthe groove,the filling block also I y having a transverse groove with a curvedpacking strip `fitted therein and outwardly pressed into the channel'bya wedge-like spring. y

In testimony whereof I have signed my name to this specification.

rCLARENCE G. EDWARDS. v Y

`9. lAn engine having alongitudinal chan-y i. nel, la pistonhaving afiller blockolperating v in said channel, having a groove wit pressionpacking strip, mounted in the groove.

10. An engine having, a cylinder with a longitudinal channel, a pistonhaving a liller block with Va transverse groove, a compression f 'stripmounted in-the groove anda spring in the compression strip inv thegroove thrusting close contact with the channel..

V 'y v 11. An engine having` al longitudinal channel, a piston having akhanger with longitudinally extending :ribs and a filling block, the

ribs each having a groove ywith a packing stripitting in the grooves anda wedge-like a rcomspring pressing the packing stripsvinto en-l gagementwith the channel. Y 12. 'An engine as claimed in claim 11, the` saidfilling block having a transverse groove f with a curved compressionstrip fitting there- :i cylinderhaving la channel at one side with thefiller block being split longitudinally, theV i ribs each having alongitudinal groove with a lpacking' strip 'fittedtherein andvvoutwardlyV` pressed byv a spring, the filler' block having a vtransverse groove and the packing stripbeing pressed outwardly by aspring.

' 14. An engine as-claimed in claim 13, .thev I cylinder wall beingformed integralandhav'- ing the channel'with the channel-shapedlillerpiece ittedinternally therein, the filler piece i eing secured to thewall' of the cylinder.

15. `An` engine yhaving avcylinder with integral walls and ins extendingthereabouts, the

depressions on each sidel of the channel, a

' channel-shaped iller piece having flanges it- I y -eo ted inthedepressions and attached thereto by screws fitted internally of thecylinder, a

rhanger having a filling-,block with alongitudinal split extendingthrough the hanger and n the lilling block, the filling vblockoperatingin the channel of the ller iece.

16. Anengine as clainie` in claim 15, the Y*

